就音乐与力学比较密切的关系，从历史发展的角度讨论了音高与振动频率的关系以及弦乐器与管乐器的发声规律。在乐器中，迄今最主要的乐器乃是这两类乐器，亦即丝与竹。最后指出，力学和科学的发展滋润了音乐，而对音乐的研究反过来也丰富了科学本身。

The close relation between music and mechanics is considered from history development. Music scale and vibration frequency, the law of music instruments are mentioned. Finally, we talk about that the music instruments are improved by mechanics research, but also music research promotes the progress of science.